The legislation concerned is the (if one wished to refer retailers to) is the: Sales of Goods Act 1979
The people to complain to about any price displays being obscured or not on display at all, if necessary are our local council Trading Standards Dept.
Alternatively we can report this as it is an offence and they are rather surprised that this is happening as it is a serious offence. The phone number to call is the CAB Consumer Helpline 08454 04 05 06 or use this link: CAB consumer protection.
If you experience any issues with your call being refused or unaccepted due to the fact there is a third party, please refer them to this link by Ofcom as it is a breach of the Equality Act.
(as quoted from source)
“If any individual contacts an organisation using Typetalk [now Text Relay] or a sign language interpreter we would expect the same level of security to be in place as with any customer. This would include ensuring that adequate security questions were asked to authenticate that the customer is who they say they are before discussing any account details. Once the individual had been authenticated the organisation would be able to answer the enquiry for the customer through the Typetalk operator. The customer who has contacted Typetalk will be aware that information will be disclosed to the operator in order for this to be relayed to them. We would consider that the customer had effectively consented to their information being used in this way.”
For those who rely on BSL, you can also use SignVideo to make a call with.